Chemistry The percentage of Nitrogen in Air is 78.03 0.03 0.94 85.02 78.03 0.03 0.94 85.02 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following forms of phosphorus is most reactive? Black phosphorus Red phosphorus Violet phosphorus White phosphorus Black phosphorus Red phosphorus Violet phosphorus White phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used for dating very old objects of archaeological importance? Phosphorus-31 Radium Carbon-14 Tritium Phosphorus-31 Radium Carbon-14 Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? 0.01 minute 3 billion years 100 years 13 days 0.01 minute 3 billion years 100 years 13 days ANSWER DOWNLOAD EXAMIANS APP
Chemistry For extinguishing fire, we use Carbon Monoxide Hydrogen Marsh gas Carbon Dioxide Carbon Monoxide Hydrogen Marsh gas Carbon Dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical bahaviour of an atom depends upon The number of electrons orbiting around the nucleus The number of protons in its nucleus The number of nucleons in the nucleus The number of neutrons in the nucleus The number of electrons orbiting around the nucleus The number of protons in its nucleus The number of nucleons in the nucleus The number of neutrons in the nucleus ANSWER DOWNLOAD EXAMIANS APP
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